Why did it increase my save file?

errr...why not?

I noticed the save file seems to stay within the size range it was at before the patch

Mine went down. Try going to a place you've been to and rest for 24 hours.

I noticed that the longer I play the game, the longer my fingernails have grown, also my beard.
My beard started as a stubble, but now it's quite long, maybe this is all connected some how.
Maybe my facial whiskers are detaching (when I do the puzzled stroky beard thing) and getting stick into the airvents of the ps3.

Bethesda stop making games that cause my beard and nails to grow!

(Fair enough this point is pointless, BUT it is about as relevant to game play as the size of the savefile)